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Product Detailed Parameters
- Description：1.6X1.2 SEAM SEAL MHZ QUARTZ XTA
- Series：QT161S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：38.4 MHz
- Frequency Stability：±30ppm
- Frequency Tolerance：±30ppm
- Load Capacitance：9pF
- ESR (Equivalent Series Resistance)：80 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-20°C ~ 70°C
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.063" L x 0.047" W (1.60mm x 1.20mm)
- Height - Seated (Max)：0.016" (0.40mm)
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Overview
The QST QT161S-38.400MAAC-T is a surface-mount crystal oscillator operating at a nominal frequency of 38.4 MHz. It features a frequency tolerance of ±30 ppm within the -20°C to +70°C temperature range. The component utilizes a load capacitance of 9 pF and exhibits an equivalent series resistance (ESR) of 80 Ohms. It is housed in a compact 4-SMD, No Lead package with physical dimensions of 1.6 x 1.2 x 0.35 mm.
Feature Summary
- Compact surface-mount design suitable for space-constrained PCB layouts
- Stable frequency generation with specified tolerance over industrial temperature ranges
- Low profile construction utilizing leadless SMD packaging
Applications
- Clock signal generation for microcontrollers
- Timing reference for communication interfaces
- Frequency control in portable electronic devices
Procurement Notes
Verify the specific suffix 'MAAC' against the manufacturer's current datasheet to confirm load capacitance and tolerance specifications. Ensure the ordering part number matches the required frequency stability and package type. Cross-reference with official QST documentation to validate availability and manufacturing date codes prior to procurement.
Selection Notes
Select this component when a 38.4 MHz clock source is required with ±30 ppm stability. Consider the 9 pF load capacitance requirement for circuit compatibility. Evaluate the 80 Ohm ESR against the oscillator circuit design. Confirm the 1.6 x 1.2 mm footprint fits the target PCB layout constraints.
Part Context
This part belongs to the QT161S series of surface-mount crystals from QST. The series offers various frequency options and tolerance grades. The MAAC suffix indicates specific electrical parameters including load capacitance and temperature stability. This model provides a standardized solution for timing applications requiring precise frequency control.
Replacement Considerations
QT161S-38.400MAAV-T offers similar frequency but may differ in load capacitance or tolerance specifications. Verify electrical equivalence before substitution. Consult QST documentation for direct cross-references.
